Improvement in varnishes



1 salt in a solution UNITED STATES PATENT OFFICE.

YORK, ASSIGNOR TO LEONARD SAME PLACE.

lMPRO VEMENTJN VARNISHES.

Specification forming part of Letters Patent No. 220,334, dated October 7, 1879; application filed July 16, 1879.

To all whom it may concern:

Be it known that I, REVERE M. BREINIG, of the city of Brooklyn, countyof Kings, and State of New York, have invented a new and useful Article of Varnish and hereby declare dated September'19, 1871, and which was prepared, as 8therein described, by taking fiftysix poun A of strong alkali, such as caustic soda orpotash, dissolving it in forty-eight gallons of water, either by the aid of dry or of steam heat, and to this solution adding twentyeight gallons of linseed-oil or cotton-seed oil, or of any drying oils, or their equivalents in fats. This mixture was then boiled until the ingredients were united into a soap. There was then taken nitrate of lead or copper, or sulphate of zinc, or any equivalentmetallic of 24 Baum; and this solution was mixed with the'soap prepared,

the fatty acid of the soap combined with the metallic oxide (of zinc, lead, or copper) as the I take ninety gallons of water, in which I dissolve, by steam or dry heat, about thirty pounds of caustic soda or potash, the former being preferable for my purpose. N extI take one hundred and fifty pounds of any resinous gum, such as resin, gum copal,

of linseed-oil, either'raw or boiled, adding ten pounds of metalline gum, which I have above described.

The resinous gum and the metalline gum should be put into the linseed-oil at the same time and somewhat gradually, in order to more speedily and uniformly melt the resinous however, of the metalline gum may be varied,

depending upon the quality of the resinous gum, its age, and hardness, because where the gum is old and hard more of the metalline gum is required than when it is young and soft,

dissolving the resinous gum, and the object being to thoroughly dissolve the latter and incorporate it with the oil.

The gum solution thus made I add to the alkaline solution above described, the former being added gradually, and the mixture bein g thoroughly stirred during the process, so that the saponification of the resinous gum and oil thus combined may take place as the mixing proceeds. I then boil the mixture un-. til it becomes a homogeneous mass constituting a soap insoluble in water. It is then taken from the fire, and I add to it one hundred pounds of Liverpool salt, and I have found that the best results are obtained when the salt has been previously dissolved in about he suspended or free alkali he mass may then be put washing water poured off, I add fifty to sixty gallons of clear cold Water, and boil until the Whole is thoroughly united; I then take any one of the following metallic salts, ordinarily used asdriers, namely, either a salt of lead,-

zinc, copper, aluminum, or manganese inasolution of 24 Baum, for the purpose of precipitating the gum.

Enough of the metallic salt should be used for the purpose, and I have consisting of inetalline gum, caustic soda or found that 24 Baunl is about the proper potash, resinous gum, linseed-oil, chloride of test. -The resulting gum is then washed in sodium, turpentine, and a drier consisting 0 clear cold water three or four times until it is a metallic salt, as described, and in the profree from all acid. I then boil it by dry heat portions substantially as set forth. until it is clear and stringy, and draw it off In testimony whereof I have hereunto set the fire and add turpentine, naphtha, or any my hand in the presence of two witnesses. equiva ent, as required, the former being pref- 1 erable and producing better varnish. BREINIG' What I claim as my invention, and desire Witnesses: to secure by Letters Patent, is- WM. A. J ENNER,

The varnish compound herein described, J. ll. IVES. 

